code.vuplus.com Git - vuplus_dvbapp/blob - lib/base/ebase.cpp

   1 #include <lib/base/ebase.h>
   2
   3 #include <fcntl.h>
   4 #include <unistd.h>
   5 #include <errno.h>
   6
   7 #include <lib/base/eerror.h>
   8 #include <lib/base/elock.h>
   9
  10 eSocketNotifier::eSocketNotifier(eMainloop *context, int fd, int requested, bool startnow): context(*context), fd(fd), state(0), requested(requested)
  11 {
  12         if (startnow)
  13                 start();
  14 }
  15
  16 eSocketNotifier::~eSocketNotifier()
  17 {
  18         stop();
  19 }
  20
  21 void eSocketNotifier::start()
  22 {
  23         if (state)
  24                 stop();
  25
  26         context.addSocketNotifier(this);
  27         state=1;
  28 }
  29
  30 void eSocketNotifier::stop()
  31 {
  32         if (state)
  33                 context.removeSocketNotifier(this);
  34
  35         state=0;
  36 }
  37
  38                                         // timer
  39 void eTimer::start(long msek, bool singleShot)
  40 {
  41         if (bActive)
  42                 stop();
  43
  44         bActive = true;
  45         bSingleShot = singleShot;
  46         interval = msek;
  47         gettimeofday(&nextActivation, 0);
  48 //      eDebug("this = %p\nnow sec = %d, usec = %d\nadd %d msec", this, nextActivation.tv_sec, nextActivation.tv_usec, msek);
  49         nextActivation += (msek<0 ? 0 : msek);
  50 //      eDebug("next Activation sec = %d, usec = %d", nextActivation.tv_sec, nextActivation.tv_usec );
  51         context.addTimer(this);
  52 }
  53
  54 void eTimer::startLongTimer( int seconds )
  55 {
  56         if (bActive)
  57                 stop();
  58
  59         bActive = bSingleShot = true;
  60         interval = 0;
  61         gettimeofday(&nextActivation, 0);
  62 //      eDebug("this = %p\nnow sec = %d, usec = %d\nadd %d sec", this, nextActivation.tv_sec, nextActivation.tv_usec, seconds);
  63         if ( seconds > 0 )
  64                 nextActivation.tv_sec += seconds;
  65 //      eDebug("next Activation sec = %d, usec = %d", nextActivation.tv_sec, nextActivation.tv_usec );
  66         context.addTimer(this);
  67 }
  68
  69 void eTimer::stop()
  70 {
  71         if (bActive)
  72         {
  73                 bActive=false;
  74                 context.removeTimer(this);
  75         }
  76 }
  77
  78 void eTimer::changeInterval(long msek)
  79 {
  80         if (bActive)  // Timer is running?
  81         {
  82                 context.removeTimer(this);       // then stop
  83                 nextActivation -= interval;  // sub old interval
  84         }
  85         else
  86                 bActive=true; // then activate Timer
  87
  88         interval = msek;                                                // set new Interval
  89         nextActivation += interval;             // calc nextActivation
  90
  91         context.addTimer(this);                         // add Timer to context TimerList
  92 }
  93
  94 void eTimer::activate()   // Internal Funktion... called from eApplication
  95 {
  96         context.removeTimer(this);
  97
  98         if (!bSingleShot)
  99         {
 100                 nextActivation += interval;
 101                 context.addTimer(this);
 102         }
 103         else
 104                 bActive=false;
 105
 106         /*emit*/ timeout();
 107 }
 108
 109 void eTimer::addTimeOffset( int offset )
 110 {
 111         nextActivation.tv_sec += offset;
 112 }
 113
 114 // mainloop
 115 ePtrList<eMainloop> eMainloop::existing_loops;
 116
 117 void eMainloop::addSocketNotifier(eSocketNotifier *sn)
 118 {
 119         int fd = sn->getFD();
 120         ASSERT(notifiers.find(fd) == notifiers.end());
 121         ASSERT(new_notifiers.find(fd) == new_notifiers.end());
 122         new_notifiers[fd]=sn;
 123 }
 124
 125 void eMainloop::removeSocketNotifier(eSocketNotifier *sn)
 126 {
 127         int fd = sn->getFD();
 128         std::map<int,eSocketNotifier*>::iterator i(notifiers.find(fd));
 129         if (i != notifiers.end())
 130                 return notifiers.erase(i);
 131         i = new_notifiers.find(fd);
 132         if (i != new_notifiers.end())
 133                 return new_notifiers.erase(i);
 134         eFatal("removed socket notifier which is not present");
 135 }
 136
 137 int eMainloop::processOneEvent(unsigned int user_timeout, PyObject **res, ePyObject additional)
 138 {
 139         int return_reason = 0;
 140                 /* get current time */
 141         timeval now;
 142         gettimeofday(&now, 0);
 143         m_now_is_invalid = 0;
 144
 145         if (additional && !PyDict_Check(additional))
 146                 eFatal("additional, but it's not dict");
 147
 148         if (additional && !res)
 149                 eFatal("additional, but no res");
 150
 151         int poll_timeout = -1; /* infinite in case of empty timer list */
 152
 153         if (m_timer_list)
 154         {
 155                 singleLock s(recalcLock);
 156                 poll_timeout = timeval_to_usec(m_timer_list.begin()->getNextActivation() - now);
 157                         /* if current timer already passed, don't delay infinite. */
 158                 if (poll_timeout < 0)
 159                         poll_timeout = 0;
 160
 161                         /* convert us to ms */
 162                 poll_timeout /= 1000;
 163         }
 164
 165         if ((user_timeout > 0) && (poll_timeout > 0) && ((unsigned int)poll_timeout > user_timeout))
 166         {
 167                 poll_timeout = user_timeout;
 168                 return_reason = 1;
 169         }
 170
 171         for (std::map<int, eSocketNotifier*>::iterator it(new_notifiers.begin()); it != new_notifiers.end();)
 172         {
 173                 notifiers[it->first]=it->second;
 174                 new_notifiers.erase(it++);
 175         }
 176
 177         int nativecount=notifiers.size(),
 178                 fdcount=nativecount,
 179                 ret=0;
 180
 181         if (additional)
 182                 fdcount += PyDict_Size(additional);
 183
 184                 // build the poll aray
 185         pollfd pfd[fdcount];  // make new pollfd array
 186         std::map<int,eSocketNotifier*>::iterator it = notifiers.begin();
 187         int i=0;
 188         for (; i < nativecount; ++i, ++it)
 189         {
 190                 pfd[i].fd = it->first;
 191                 pfd[i].events = it->second->getRequested();
 192         }
 193
 194         if (additional)
 195         {
 196                 PyObject *key, *val;
 197                 int pos=0;
 198                 while (PyDict_Next(additional, &pos, &key, &val)) {
 199                         pfd[i].fd = PyObject_AsFileDescriptor(key);
 200                         pfd[i++].events = PyInt_AsLong(val);
 201                 }
 202         }
 203
 204         ret = ::poll(pfd, fdcount, poll_timeout);
 205                         /* ret > 0 means that there are some active poll entries. */
 206         if (ret > 0)
 207         {
 208                 int i=0;
 209                 return_reason = 0;
 210                 for (; i < nativecount ; ++i)
 211                 {
 212                         if (pfd[i].revents)
 213                         {
 214                                 int handled = 0;
 215                                 it = notifiers.find(pfd[i].fd);
 216                                 if (it != notifiers.end())
 217                                 {
 218                                         int req = it->second->getRequested();
 219                                         handled |= req;
 220                                         if (pfd[i].revents & req)
 221                                                 it->second->activate(pfd[i].revents);
 222                                 }
 223                                 pfd[i].revents &= ~handled;
 224                                 if (pfd[i].revents & (POLLERR|POLLHUP|POLLNVAL))
 225                                         eDebug("poll: unhandled POLLERR/HUP/NVAL for fd %d(%d)", pfd[i].fd, pfd[i].revents);
 226                         }
 227                 }
 228                 for (; i < fdcount; ++i)
 229                 {
 230                         if (pfd[i].revents)
 231                         {
 232                                 if (!*res)
 233                                         *res = PyList_New(0);
 234                                 ePyObject it = PyTuple_New(2);
 235                                 PyTuple_SET_ITEM(it, 0, PyInt_FromLong(pfd[i].fd));
 236                                 PyTuple_SET_ITEM(it, 1, PyInt_FromLong(pfd[i].revents));
 237                                 PyList_Append(*res, it);
 238                                 Py_DECREF(it);
 239                         }
 240                 }
 241
 242                 ret = 1; /* poll did not timeout. */
 243         } else if (ret < 0)
 244         {
 245                         /* when we got a signal, we get EINTR. */
 246                 if (errno != EINTR)
 247                         eDebug("poll made error (%m)");
 248                 else
 249                 {
 250                         return_reason = 2;
 251                         ret = -1; /* don't assume the timeout has passed when we got a signal */
 252                 }
 253         }
 254
 255                 /* when we not processed anything, check timers. */
 256         if (!m_timer_list.empty())
 257         {
 258                         /* we know that this time has passed. */
 259                 singleLock s(recalcLock);
 260
 261                 if (ret || m_now_is_invalid)
 262                         gettimeofday(&now, 0);
 263                 else
 264                         now += poll_timeout;
 265
 266                         /* process all timers which are ready. first remove them out of the list. */
 267                 while ((!m_timer_list.empty()) && (m_timer_list.begin()->getNextActivation() <= now))
 268                         m_timer_list.begin()->activate();
 269         }
 270
 271         return return_reason;
 272 }
 273
 274 void eMainloop::addTimer(eTimer* e)
 275 {
 276         m_timer_list.insert_in_order(e);
 277 }
 278
 279 void eMainloop::removeTimer(eTimer* e)
 280 {
 281         m_timer_list.remove(e);
 282 }
 283
 284 int eMainloop::iterate(unsigned int user_timeout, PyObject **res, ePyObject dict)
 285 {
 286         int ret = 0;
 287
 288         timeval user_timer;
 289         gettimeofday(&user_timer, 0);
 290         user_timer += user_timeout;
 291
 292                 /* TODO: this code just became ugly. fix that. */
 293         do
 294         {
 295                 if (m_interrupt_requested)
 296                 {
 297                         m_interrupt_requested = 0;
 298                         return 0;
 299                 }
 300                 if (app_quit_now) return -1;
 301                 timeval now, timeout;
 302                 gettimeofday(&now, 0);
 303                 timeout = user_timer - now;
 304
 305                 if (user_timeout && (user_timer <= now))
 306                         return 0;
 307
 308                 int to = 0;
 309                 if (user_timeout)
 310                         to = timeout.tv_sec * 1000 + timeout.tv_usec / 1000;
 311
 312                 ret = processOneEvent(to, res, dict);
 313                 if (res && *res)
 314                         return ret;
 315         } while (ret == 0);
 316
 317         return ret;
 318 }
 319
 320 int eMainloop::runLoop()
 321 {
 322         while (!app_quit_now)
 323                 iterate();
 324         return retval;
 325 }
 326
 327 void eMainloop::reset()
 328 {
 329         app_quit_now=false;
 330 }
 331
 332 PyObject *eMainloop::poll(ePyObject timeout, ePyObject dict)
 333 {
 334         PyObject *res=0;
 335
 336         if (app_quit_now)
 337                 Py_RETURN_NONE;
 338
 339         int user_timeout = (timeout == Py_None) ? 0 : PyInt_AsLong(timeout);
 340
 341         iterate(user_timeout, &res, dict);
 342         ePyObject ret(res);
 343
 344         if (!ret) /* return empty list on timeout */
 345                 return PyList_New(0);
 346
 347         return ret;
 348 }
 349
 350 void eMainloop::interruptPoll()
 351 {
 352         m_interrupt_requested = 1;
 353 }
 354
 355 void eMainloop::quit(int ret)
 356 {
 357         retval = ret;
 358         app_quit_now = true;
 359 }
 360
 361 void eMainloop::addTimeOffset(int offset)
 362 {
 363         for (ePtrList<eMainloop>::iterator it(eMainloop::existing_loops)
 364                 ;it != eMainloop::existing_loops.end(); ++it)
 365         {
 366                 singleLock s(it->recalcLock);
 367                 it->m_now_is_invalid = 1;
 368                 for (ePtrList<eTimer>::iterator tit = it->m_timer_list.begin(); tit != it->m_timer_list.end(); ++tit )
 369                         tit->addTimeOffset(offset);
 370         }
 371 }
 372
 373 eApplication* eApp = 0;